What this means
The IEEE assigned the MA-L block 00155E to Morgan Stanley. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 00:15:5E, it is Morgan Stanley hardware.
Frequently Asked Questions
Who owns MAC prefix 00155E?
00155E is registered to Morgan Stanley in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Morgan Stanley's block covers 16,777,216 addresses.
What devices use 00155E?
Any network device with a MAC address starting 00:15:5E was manufactured by or for Morgan Stanley.